1、MSTP以太网专线测试指标MSTP以太网专线测试指标MSTP以太网专线的测试方案和参数设置 MSTP以太网专线是利用传统的SDH网络承载,在用户端采用MSTP设备为用户提供以太网接口的专线业务。这种业务的特点是:用户接口使用方便;能够灵活提供2M100M的带宽;在骨干传输网上带宽独享,可以保证传送质量。 MSTP以太网专线的主要性能测试指标 MSTP以太网专线的性能测试指标主要是:传输时延、丢帧率、吞吐量。 传输时延:是指测试仪表收到帧的时间与发出这一帧的时间之差。假设仪表发出某一帧的时间为Ta,收到这一帧的时间为Tb,则时间Delay=Tb-Ta。传输时延包括MSTP设备处理时延、SDH设备
2、处理时延和信号传输时延。 在城域网内(短距离)应用时,MSTP以太网专线的传输时延主要是设备时延。一般MSTP设备处理时延在1ms以内,每台SDH设备引入的处理时延在0.5ms以内。在长途网内(长距离)应用时,MSTP以太网专线的传输时延主要是信号传输时延,一般按照5ms/千公里计算。 MSTP设备的处理时延与以太帧的长度是正相关的关系。以太帧越长,MSTP设备的处理时延越大。 丢帧率:是指测试仪表发出帧数与收到帧数之差除以仪表发出帧数,再乘以100%。公式表示如下:(仪表发出帧数-收到帧数)/仪表发出帧数*100%。不同帧长下的丢帧率会有所变化,随着帧长的增加,丢帧率会增加。 指标要求:以太
3、帧长度为64字节时,测试15分钟,丢帧率应为0。 吞吐量:是指在没有丢帧的情况下,整个通道的最大数据速率,一般用bit/s或者帧/秒表示。以帧长度64字节为准,根据用户的业务带宽需求,设置相应的VC通道个数。对照表如下: 业务带宽与通道配置对应关系 业务带宽 配置的 (Mbps) VC通道个数 2 VC-12-1v 4 VC-12-2v 6 VC-12-3v 8 VC-12-4v 10 VC-12-5v 15 VC-12-7v 20 VC-12-10v 25 VC-12-12v 30 VC-12-14v 35 VC-12-17v 40 VC-12-19v 45 VC-12-21v 50 VC-
4、12-23v/VC-3-1v 60 VC-12-28v 70 VC-12-33v 80 VC-12-37v 90 VC-12-42v 100 VC-12-46v/VC-3-2v 150 VC-4-1v 300 VC-4-2v 450 VC-4-3v VC-4-4v(大于4个VC4,建议采用WDM技600 术) 750 VC-4-5v 900 VC-4-6v 1000 VC-4-7v 测试方案 上述三个指标均采用环回测试方法。测试方案如下: 以太网SDH网络性能MSTP设备MSTP设备分析仪点到点MSTP以太网专线业务测试方案图业务类型 根据城域以太网论坛(Metro Ethernet Foru
5、m ,MEF)的技术规范,以太网的业务类型分为三大类:点到点的专线业务Ethernet Line(E-Line),多点到多点的虚拟专网业务Ethernet LAN(E-LAN),和点到多点的业务(E-TREE)。每一种业务类型对应多个属性,每个属性又由多个参数规定。这样,业务参数确定了业务属性,业务属性确定了业务类型。 每一种业务类型的需求主要体现在:UNI接口的业务属性和EVC(Ethernet Virtual Connection)的业务属性。 UNI接口的业务属性有: UNI业务属性 说明 UNI标识符 任意的文本字符串,表示UNI接口名字。 物理介质 符合IEEE 802.3-2002
6、标准的物理接口 速度 10 Mbps, 100 Mbps, 1 Gbps or 10 Gbps 双工模式 全双工或者自协商 MAC层 要求符合IEEE 802.3-2002标准 Yes or No. MUST be No if All to One Bundling is Yes. Service Multiplexing 如果全合一捆绑是Yes,业务复用必须是No。 Yes or No. MUST be No if All to One Bundling is Yes Bundling(捆绑) 如果全合一捆绑是Yes,捆绑必须是No。 All to One Bundling Yes or N
7、o. MUST be No if Bundling or Service Multiplexing is (全合一捆绑) Yes.如果捆绑或者业务复用是Yes,全合一捆绑必须是No。 UNI EVC ID 任意的文本字符串,表示UNI接口中的EVC UNI业务属性 说明 CE-VLAN ID / EVC Mapping table of CE-VLAN IDs to EVCs at the UNI. Map Maximum number of MUST be an integer =1 EVCs Bandwidth Profile OPTIONAL. If supported, MUST sp
8、ecify Bandwidth Profile OPTIONAL. If supported, MUST specify OPTIONAL. If supported, MUST specify and MUST support and CoS Identifiers Bridge Block of protocols with destination MAC addresses 0x0180c2000000 through 0x0180c200000f. For each protocol, MUST specify one of: Peer, Discard, or Pass to EVC
9、. GARP Block of protocols with destination MAC addresses Layer 2 Control 0x0180c2000020 through 0x0180c200002f. For each protocol, Protocol Processing MUST specify one of: Peer, Discard, or Pass to EVC. All LANs Bridge Management Group protocols with destination MAC address 0x0180c2000010. For each
10、protocol, MUST specify one of: Peer, Discard, or Pass to EVC. 说明: 1、Service Multiplexing:业务复用。指在同一端口上有多个EVC(Ethernet Virtual Connection)。每一条EVC代表一条业务,所以叫业务复用。 2、Bundling:捆绑。指在一条EVC上传送多个VLAN 的帧。 3、All to one Bundling:全合一捆绑。指整个端口所有的VLAN 捆绑到一条EVC上。也就是说此时整个端口只有一条EVC,没有业务复用。 EVC的业务属性有: EVC Service Attrib
11、ute 说明 EVC Type 包括点到点、点到多点、多点到多点 UNI List 列出与本条EVC相关的所有UNI的标识符。 CE-VLAN ID Yes or No(客户的VLAN ID是否保留) Preservation CE-VLAN CoS Yes or No(客户的业务分类是否保留) Preservation Deliver Unconditionally or Deliver Conditionally. If Unicast Service Frame Delivered Conditionally, MUST specify the delivery Delivery cri
12、teria. EVC Service Attribute 说明 Deliver Unconditionally or Deliver Conditionally. If Multicast Service Frame Delivered Conditionally, MUST specify the delivery Delivery criteria. Deliver Unconditionally or Deliver Conditionally. If Broadcast Service Delivered Conditionally, MUST specify the delivery
13、 Frame Delivery criteria. Bridge Block of protocols with destination MAC addresses 0x0180c2000000 through 0x0180c200000f. For each protocol passed to the EVC, MUST specify one of: Discard or Tunnel. Layer 2 Control GARP Block of protocols with destination MAC addresses Protocol Processing 0x0180c200
14、0020 through 0x0180c200002f. For each (only applies for L2CPs protocol passed to the EVC, MUST specify one of: passed to the EVC) Discard or Tunnel All LANs Bridge Management Group protocols with destination MAC address 0x0180c2000010. For each protocol passed to the EVC, MUST specify one of: Discar
15、d or Tunnel. For each CoS, MUST specify a CoS Identifier. MAY Service Performance specify a Frame Delay value, a Frame Delay Variation value and a Frame Loss value. 说明: EVC是指以太网虚拟连接(Ethernet Virutal Connection), 每一条EVC表示一条以太网专线业务,可能是点到点、点到多点、多点到多点的连接。 每一种业务类型的业务属性通过UNI接口参数和EVC的参数体现。具体的业务类型有: EPL:(Et
16、hernet Private Line)高度透明的专线业务。不允许在UNI接口上进行业务复用,所有的业务帧映射到一条EVC中,每条业务一个独立的端口。 EPL业务是使用最广的业务类型。 EPL业务的参数设置如下:(包括UNI业务属性和EVC业务属性两张表格) EPL业务类型的UNI属性表格 UNI Service Attribute Service Attribute Parameters and Values UNI Identifier Arbitrary text string to identify the UNI.任意字符串 Physical Medium IEEE 802.3-20
17、02 Physical Interface 错误未找到引用源。 Speed 10 Mbps, 100 Mbps, 1 Gbps or 10 Gbps Mode MUST be Full Duplex 必须是全双工 MAC Layer IEEE 802.3-2002 错误未找到引用源。 UNI Service Attribute Service Attribute Parameters and Values Service Multiplexing MUST be No 不进行业务复用 Bundling MUST be No 不捆绑 All to One Bundling MUST be Yes
18、 全合一捆绑 Arbitrary text string to identify the EVC instance at the UNI UNI EVC ID 任意字符串,用来在UNI接口上标识EVC All Service Frames at the UNI MUST map to a single CE-VLAN ID / EVC Map E-Line Service type EVC 在UNI接口上所有的业务帧必须映射到一条E-Line类型的EVC Maximum number of EVCs MUST be 1 只有一条EVC CIR: MUST be largest Service
19、Frame size Bandwidth Profile Per Ingress EIR: MUST be 0 UNI EBS: MUST be 0 CM: MUST be False (color-blind) CF: Not Specified Layer 2 Control Protocol 见下面专门的表格说明L2CP的处理 Processing EPL业务类型的EVC属性表格 EVC Service Attribute Service Attribute Parameters and Values EVC Type MUST be Point-to-Point 必须是点到点 MUST
20、 list the two UNIs associated with the EVC. 列出与UNI List 此EVC相关的两个UNI端口 CE-VLAN ID Preservation MUST be Yes 保留客户设备的VLAN ID CE-VLAN CoS Preservation MUST be Yes 保留客户设备的CoS Unicast Service Frame MUST Deliver Unconditionally 无条件转发 Delivery Multicast Service Frame MUST Deliver Unconditionally 无条件转发 Deliv
21、ery Broadcast Service Frame MUST Deliver Unconditionally 无条件转发 Delivery Layer 2 Control Protocols Processing (only applies for 见下面专门的表格说明L2CP的处理 L2CPs passed to the EVC) Only one CoS is REQUIRED. A CoS ID of MUST be specified. Service Performance Frame Delay, Frame Delay Variation and Frame Loss Rat
22、io MUST be specified. EVPL:(Ethernet Virtual Private Line)以太网虚拟专线。允许在UNI接口上进行业务复用。业务帧的传送不是完全透明的,二层控制协议的业务帧全部被丢弃。 EVPL业务的参数设置如下:(包括UNI业务属性和EVC业务属性两张表格) EVPL的UNI业务属性表格 UNI Service Attribute Service Attribute Parameters and Values UNI Identifier Arbitrary text string to identify the UNI. 任意的字符串 Physica
23、l Medium IEEE 802.3-2002 Physical Interface 错误未找到引用源。 Speed 10 Mbps, 100 Mbps, 1 Gbps or 10 Gbps Mode SHOULD be Full Duplex 必须是全双工 MAC Layer IEEE 802.3-2002错误未找到引用源。 SHOULD be supported. When more than one EVC is multiplexed at a UNI, All to One Bundling MUST be No. Service Multiplexing 当在UNI接口上复用超过
24、1条EVC时,全合一捆绑必须是No。 Yes or No. If Yes, then CE-VLAN ID Preservation MUST be Yes. MUST be No if All to One Bundling is Yes Bundling 如果选择Yes,那么CE-VLAN ID Preservation必须是Yes。如果全合一捆绑是Yes,那么捆绑必须是No。 Yes or No. If Yes, then CE-VLAN ID Preservation MUST be Yes. MUST be No if Bundling or Service Multiplexing
25、 is Yes. All to One Bundling 如果选择Yes,那么CE-VLAN ID Preservation必须是Yes。如果捆绑或者业务复用是Yes,那么全合一捆绑必须是No。 Arbitrary text string to identify each EVC instance UNI EVC ID 任意字符串,标识每一条EVC。 Mapping table of CE-VLAN IDs to E-Line Service type UNI CE-VLAN ID / EVC Map EVC IDs. Maximum number of EVCs = 1 Bandwidth
26、Profile Per Ingress No or UNI Bandwidth Profile Per EVC No or Bandwidth Profile Per CoS No or Identifier Layer 2 Control Protocol 见下面专门的表格说明L2CP的处理 Processing EVPL的EVC业务属性表格 EVC Service Attribute Service Attribute Parameters and Values EVC Type MUST be Point-to-Point 必须是点到点 UNI List MUST list the tw
27、o UNIs associated with the EVC. CE-VLAN ID Preservation Yes or No CE-VLAN CoS Preservation Yes or No Unicast Service Frame Deliver Unconditionally or Deliver Conditionally. If Delivery Delivered Conditionally, MUST specify the delivery criteria. Multicast Service Frame Deliver Unconditionally or Del
28、iver Conditionally. If Delivery Delivered Conditionally, MUST specify the delivery criteria. Broadcast Service Frame Deliver Unconditionally or Deliver Conditionally. If Delivery Delivered Conditionally, MUST specify the delivery criteria. Layer 2 Control Protocols Processing (only applies for 见下面专门
29、的表格说明L2CP的处理 L2CPs passed to the EVC) MAY support none, one or more CoS. If supported, a CoS Service Performance ID, Frame Delay and Frame Loss Ratio MUST be specified. Frame Delay Variation MAY be specified. EVPL和EPL专线业务对于二层控制协议的处理需求 Protocol EVPL EPL Spanning Tree Protocol (STP), SHOULD Discard MU
30、ST Tunnel Rapid Spanning Tree Protocol (RSTP), Multiple Spanning Tree Protocol (MSTP) PAUSE (802.3x) SHOULD Discard SHOULD Discard MUST Not Tunnel Link Aggregation Control Protocol (LACP) SHOULD Discard SHOULD Tunnel Marker Protocol SHOULD Discard SHOULD Tunnel Authentication (802.1x) SHOULD Discard
31、 SHOULD Tunnel All LANs Bridge Management Group Block of SHOULD Discard MUST Tunnel Protocols Generic Attribute Registration Protocol (GARP) SHOULD Discard MUST Tunnel Block of Protocols EPLAN(Ethernet Private LAN)以太网专用局域网。每个端口只有一条业务。 EVPLAN(Ethernet Virtual LAN)以太网虚拟专用网。允许进行业务复用,一个端口可以有多条业务。 EP-Tree(Ethernet Private Tree)以太网专用
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